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padilas [110]
3 years ago
15

PLEASE HELP!! In triangle ABC, B= 120 degrees, a=10, c=18, find C

Mathematics
2 answers:
S_A_V [24]3 years ago
7 0
Add all of them then subtract from 180
sveta [45]3 years ago
7 0
Check the picture below.  Notice that we can always solve for the cosine and simply use the sides alone to get an angle.

\bf cos^{-1}\left(\cfrac{10^2+(\sqrt{604})^2-18^2}{2(10)(\sqrt{604})}  \right)=\measuredangle C
\\\\\\
cos^{-1}\left(\cfrac{100+604-324}{20\sqrt{604}}  \right)=\measuredangle C \\\\\\
cos^{-1}(0.77309903583)\approx \measuredangle C\implies 39.366998916677^o\approx \measuredangle C

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Add the following rational number7/-27 and 11/18
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Answer:

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Step-by-step explanation:

As the question is not complete, Here is the complete question.

Suppose that the universal set is U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Express each of these sets with bit strings where the ith bit in the string is 1 if i is in the set and 0 otherwise.

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0 = No, element is not present in sub set but present in universal set.

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